The Visualized Twitter Profile, Radiology (@Radiology_study)


Since

Dec 31, 2021



Tweets


96

including Replies, Retweets


Likes


Avg. 0.1

Retweets


Avg. 0.6

Radiology's profile Visualized: 96 Tweets with 14 Likes and 53 Retweets


Radiology (Radiology_study)'s Profile Picture

Radiology 

@Radiology_study

28 Followers


   

Dec 31, 2021


Radiology diagnostic technology تقنية الأشعة التشخيصية..معلومات حول التخصص #US #CT #MRI #XRAY



96

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28

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42

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Summary Text

0 #Likes & 1 #Retweets "4- the lumber vertebrae should visualized at the middle of the film. 5- iliac crest and pelvic brim should be demonstrated. 6- opacities and calcifica..." https://twitter.com/Radiology_study/status/1479428669416353793 🗓 Since Dec 31, 2021 posted 96 Tweets and got 14 #Likes and 53 #Retweets 📊 Find more on The Visualized Twitter Profile of Radiology #radiology_study #ultrasound #radiology #ثريد #us #xray #radiation #scatter #absorption #chest #heart #abdomen #radiography #anatomy #radiograph #pathology #tb #radioloy_study #pathologic #artifact #contrast Radiology (@Radiology_study) 28 Followers 42 Following 96 Tweets Radiology diagnostic technology تقنية الأشعة التشخيصية..معلومات حول التخصص #US #CT #MRI #XRAY https://thevisualized.com/twitter/timeline/Radiology_study;focused=1479428669416353793



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Radiology (Radiology_study)'s Profile Picture

Radiology 

@Radiology_study

28 Followers

  • 10:45 PM ﹒ Jan 18, 2022
    How do sound waves travel from one point to another? Air and all matter are made up of molecules (small particles) physically bound to one another by intermolecular elastic forces. Sound waves require matter to exist, to travel or propagate from one point to another.
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  • 10:45 PM ﹒ Jan 18, 2022
    Sources of U/S sound waves:- The source of the ultrasound sound wave in medical ultrasound is a piezoelectric transducer. https://t.co/X4Az01JdDK
    Radiology Twitter Tweet: Sources of U/S sound waves:-
The source of the ultrasound sound wave in medical ultrasound is a piezoelectric transducer. https://t.co/X4Az01JdDK
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  • 10:45 PM ﹒ Jan 18, 2022
    Frequencies: Audible sound: 20 Hz- 20000 Hz Infrasound: Below 20 Hz Ultrasound: Above 20000 Hz Diagnostic U/S frequency: The frequencies used in diagnostic ultrasound are typically between 2 and 18 MHz.
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  • 10:45 PM ﹒ Jan 18, 2022
    What is ultrasound? Ultrasound: is a mechanical (material) waves of frequencies above 20,000 hertz (2MHz). Ultrasound uses sound waves that are far above the frequency can be heard by the human ear. #Radiology_study #ultrasound
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  • 10:45 PM ﹒ Jan 18, 2022
    Also is mechanical radiant energy that is transmitted by longitudinal pressure waves in air and other matter #ultrasound #radiology
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  • 10:45 PM ﹒ Jan 18, 2022
    #ثريد عن الموجات فوق الصوتية What is a sound wave? A sound: Is a wave that has all the usual wave properties (reflection, refraction, scattering). The generally standard range of audible sound frequencies is 20 to 20,000 Hz (20 Hz to 20 KHz). #ultrasound #Radiology_study
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  • 10:36 PM ﹒ Jan 18, 2022
    Ultrasound considered first choice for pregnancy.
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  • 10:36 PM ﹒ Jan 18, 2022
    The purpose of a Doppler ultrasound is to check blood flow. Doctors use the findings to help determine whether there is a blockage, narrowing, or leakage in a blood vessel. #Radiology_study #ultrasound
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  • 10:36 PM ﹒ Jan 18, 2022
    There is another type of Ultrasound commonly used is the Doppler different technique of using sound waves that allows the blood flow through arteries and veins. #Radiology_study #ultrasound
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  • 10:36 PM ﹒ Jan 18, 2022
    Ultrasound is the safest form of medical imaging and has a wide range of applications. There are no harmful effects when using ultrasound and it’s one of the most cost effective forms of medical imaging available to us. #Radiology_study #US #ultrasound #radiology
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  • 10:26 PM ﹒ Jan 18, 2022
    The basis of the rule was to do abdominal and pelvic x-ray exams only during the 10 days following the onset of menstruation.
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  • 10:26 PM ﹒ Jan 18, 2022
    What is the 10 day rule in radiology: The 10-day rule was established by the International Commission on Radiological Protection to minimize the potential for performing x-ray exams on pregnant women. #Radiology_study #XRAY #radiology
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  • 10:26 PM ﹒ Jan 18, 2022
    What is ALARA principle ? ALARA stands for “as low as reasonably achievable”. This principle means that even if it is a small dose, if receiving that dose has no direct benefit, you should try to avoid it. https://t.co/a28ccB34GB
    Radiology Twitter Tweet: What is ALARA principle ?
ALARA stands for “as low as reasonably achievable”. This principle means that even if it is a small dose, if receiving that dose has no direct benefit, you should try to avoid it. https://t.co/a28ccB34GB
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  • 10:26 PM ﹒ Jan 18, 2022
    What is Radiation protection?Radiation protection aims to reduce unnecessary radiation exposure with a goal to minimize the harmful effects of ionizing radiation. The three principles in radiation protection: Time Distance Shielding. #XRAY #radiology https://t.co/pHkgNN8mqq
    Radiology Twitter Tweet: What is Radiation protection?Radiation protection aims to reduce unnecessary radiation exposure with a goal to minimize the harmful effects of ionizing radiation.
The three principles in radiation protection:
Time
Distance
Shielding.
#XRAY #radiology https://t.co/pHkgNN8mqq
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  • 10:12 PM ﹒ Jan 18, 2022
    #XRAY #radiology #Radiology_study #radiation https://t.co/kRnYc1G2IH
    Radiology Twitter Tweet: #XRAY #radiology #Radiology_study #radiation https://t.co/kRnYc1G2IH
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  • 9:52 PM ﹒ Jan 16, 2022
    Scattering of radiation is the change of the direction of the photon due to the interaction of the radiation with the medium, either with or without loss of energy by the photons. #Xray #radiation #radiology #scatter
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  • 9:52 PM ﹒ Jan 16, 2022
    Absorption is the transfer of energy from radiation to the medium. The energy is initially available as kinetic energy of secondary electrons in the medium. #XRAY #Radiology_study #Absorption #radiation
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  • 9:52 PM ﹒ Jan 16, 2022
    Interaction of x-rays and gamma rays with matter: Attenuation,absorption and scattering: – Attenuation is the reduction in intensity of radiation when it passes through a medium. Attenuation may be due to absorption or scattering or due to both of the processes. #XRAY #radiology https://t.co/QtWTRNNUkI
    Radiology Twitter Tweet: Interaction of x-rays and gamma rays with matter:
Attenuation,absorption and scattering:
– Attenuation is the reduction in intensity of radiation when it passes through a medium. Attenuation may be due to absorption or scattering or due to both of the processes.
#XRAY #radiology https://t.co/QtWTRNNUkI
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  • 3:47 AM ﹒ Jan 16, 2022
    In the abdominal cavity, the liver is positioned mostly on the left side instead of the right. And the stomach is on the right side of the body instead of the left. #XRAY #radiology #Radiology_study #chest #heart
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  • Most Popular Tweet since Dec 31, 2021
    3:47 AM ﹒ Jan 16, 2022
    What is situs inversus? Situs inversus is a genetic condition in which the organs in the chest and abdomen are positioned in a mirror image from their normal positions. For example, the left atrium of the heart and the left lung are positioned on the body’s right side. #XRAY https://t.co/C8rKcKIRJ6
    Radiology Twitter Tweet: What is situs inversus?
Situs inversus is a genetic condition in which the organs in the chest and abdomen are positioned in a mirror image from their normal positions. For example, the left atrium of the heart and the left lung are positioned on the body’s right side. 
#XRAY https://t.co/C8rKcKIRJ6Radiology Twitter Tweet: What is situs inversus?
Situs inversus is a genetic condition in which the organs in the chest and abdomen are positioned in a mirror image from their normal positions. For example, the left atrium of the heart and the left lung are positioned on the body’s right side. 
#XRAY https://t.co/C8rKcKIRJ6
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  • 4:29 AM ﹒ Jan 15, 2022
    RT @Dr_FawazMuqamis: ممّا أعجبني المُلتزم، ليس فاقداً للشهوات المُأدّب، ليس عاجزاً عن الرد والكريم، ليس كارهاً للمال حتى المتفوق، قد لا يك…
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  • 2:49 PM ﹒ Jan 07, 2022
    Lateral dorsal decubitus image of the abdomen used to demonstrate free air in a patient who cannot move from supine position. https://t.co/b2RPrbSAbu
    Radiology Twitter Tweet: Lateral dorsal decubitus image of the abdomen used to demonstrate free air in a patient who cannot move from supine position. https://t.co/b2RPrbSAbu
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  • 1:19 PM ﹒ Jan 07, 2022
    Why we need AP erect in abdomen: Because AP erect used to demonstrate air/fluid levels Note: both hemidiaphragms should be included. #Radiology_study #Xray #radiology #chest #abdomen #radiography https://t.co/UyRbVYqKch
    Radiology Twitter Tweet: Why we need AP erect in abdomen:
Because AP erect used to demonstrate air/fluid levels 
Note: both hemidiaphragms should be included.
#Radiology_study #Xray #radiology #chest #abdomen #radiography https://t.co/UyRbVYqKchRadiology Twitter Tweet: Why we need AP erect in abdomen:
Because AP erect used to demonstrate air/fluid levels 
Note: both hemidiaphragms should be included.
#Radiology_study #Xray #radiology #chest #abdomen #radiography https://t.co/UyRbVYqKchRadiology Twitter Tweet: Why we need AP erect in abdomen:
Because AP erect used to demonstrate air/fluid levels 
Note: both hemidiaphragms should be included.
#Radiology_study #Xray #radiology #chest #abdomen #radiography https://t.co/UyRbVYqKch
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  • 0:24 PM ﹒ Jan 07, 2022
    4- the lumber vertebrae should visualized at the middle of the film. 5- iliac crest and pelvic brim should be demonstrated. 6- opacities and calcifications should be visualized. 7- preparation of the patient is very important to avoid gases.
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  • 0:24 PM ﹒ Jan 07, 2022
    The radiographic Criteria of Plain abdomen: The abdomen radiograph should demonstrate the following: 1- Renal, hepatic and splenic shadows. 2- Lower ribs (11th and 12th ribs). 3- Both psoas muscle should be visualized. https://t.co/pnjLJkVsxM
    Radiology Twitter Tweet: The radiographic Criteria of Plain abdomen:
The abdomen radiograph should demonstrate the following: 1- Renal, hepatic and splenic shadows.
2- Lower ribs (11th and 12th ribs).
3- Both psoas muscle should be visualized. https://t.co/pnjLJkVsxM
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  • 0:24 PM ﹒ Jan 07, 2022
    The plain abdomen examination is very important for many disorders. It is a preliminary investigation for all the abdominal contrast examinations. The basic projection of abdomen is AP Supine https://t.co/pItuMywUUv
    Radiology Twitter Tweet: The plain abdomen examination is very important for many disorders. It is a preliminary investigation for all the abdominal contrast examinations.
The basic projection of abdomen is AP Supine https://t.co/pItuMywUUv
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  • 0:24 PM ﹒ Jan 07, 2022
    #ثريد Radiography of abdomen:- Planes and regions: The abdomen is divided into nine regions by two transverse planes and two parasagittal (or vertical) planes. #Radiology_study #radiology #Xray #Abdomen #Radiography https://t.co/Mp8kIPuJ5I
    Radiology Twitter Tweet: #ثريد 
Radiography of abdomen:-

Planes and regions:
The abdomen is divided into nine regions by two transverse planes and two parasagittal (or vertical) planes.

#Radiology_study #radiology #Xray #Abdomen #Radiography https://t.co/Mp8kIPuJ5I
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  • 0:00 PM ﹒ Jan 07, 2022
    Lateral chest radiography #anatomy #radiograph #chest #xray #Radiology #Radiology_study https://t.co/YLy7B7jbBX
    Radiology Twitter Tweet: Lateral chest radiography
#anatomy #radiograph #chest #xray #Radiology #Radiology_study https://t.co/YLy7B7jbBX
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  • 11:58 AM ﹒ Jan 07, 2022
    Effect of inspiration/expiration of chest radiography: -If 6 Anterior or 10 posterior ribs are visible then the patient has taken an adequate inspiration effort. -Conversely, fewer than 6 Anterior ribs implies a poor inspiratory effort #Radiology_study #Xray #chest #radiology https://t.co/whznKqrCMk
    Radiology Twitter Tweet: Effect of inspiration/expiration of chest radiography:
-If 6 Anterior or 10 posterior ribs are visible then the patient has taken an adequate inspiration effort.
-Conversely, fewer than 6 Anterior ribs implies a poor inspiratory effort
#Radiology_study #Xray #chest #radiology https://t.co/whznKqrCMkRadiology Twitter Tweet: Effect of inspiration/expiration of chest radiography:
-If 6 Anterior or 10 posterior ribs are visible then the patient has taken an adequate inspiration effort.
-Conversely, fewer than 6 Anterior ribs implies a poor inspiratory effort
#Radiology_study #Xray #chest #radiology https://t.co/whznKqrCMk
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  • 11:45 AM ﹒ Jan 07, 2022
    The scapulae should be clear of the lung fields -There should be sufficient inspiration to demonstrate 9+ posterior intercostal spaces. -Penetration the vertebral outlines should be visible in the mediastinum. Density the average density of the lung fields should be approximately
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  • 11:45 AM ﹒ Jan 07, 2022
    No rotation, the medial ends of the clavicle should be equidistant from the spine. -Centering, the image should be centered in the midline at the level of T6/7 The medial ends of the clavicles should be projected at the level of T4/5
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  • 11:45 AM ﹒ Jan 07, 2022
    How to evaluate the chest image? -ID and markers must be present and correct in the appropriate area of the film. -Limits of anatomy, superiorly the skin margins of the apices, inferiorly the costaphrenic angles, laterally the ribcage. #Radiology_study #Xray #radiology #chest https://t.co/6BT4lwA93w
    Radiology Twitter Tweet: How to evaluate the chest image?

-ID and markers must be present and correct in the appropriate area of the film.
-Limits of anatomy, superiorly the skin margins of the apices, inferiorly the costaphrenic angles, laterally the ribcage.
#Radiology_study #Xray #radiology #chest https://t.co/6BT4lwA93w
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  • 11:37 AM ﹒ Jan 07, 2022
    Why we need lateral decubitus position in chest: -To see Small pleural effusions are demonstrated by air-fluid levels in pleural space. -Small amounts of air in pleural cavity may demonstrate a possible pneumothorax #Xray #Radiology_study #radiology #pathology #chest #Radiograph https://t.co/JSz33SB2BM
    Radiology Twitter Tweet: Why we need lateral decubitus position in chest:
-To see Small pleural effusions are demonstrated by air-fluid levels in pleural space.
-Small amounts of air in pleural cavity may demonstrate a possible pneumothorax
#Xray #Radiology_study #radiology #pathology #chest #Radiograph https://t.co/JSz33SB2BM
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  • 9:33 AM ﹒ Jan 07, 2022
    For example: Apical Chest projection demonstrating TB in the right apex: #Xray #Radiology_study #radiology #chest #pathology #TB https://t.co/B7OOiqvXek
    Radiology Twitter Tweet: For example:
Apical Chest projection demonstrating TB in the right apex:
#Xray #Radiology_study #radiology #chest #pathology #TB https://t.co/B7OOiqvXek
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  • 9:33 AM ﹒ Jan 07, 2022
    Why we do Apical view? -To evaluate apex of the lung. -To clarify anomaly seen on PA projection e.g. Interlobular effusion, Some Opacities obscured in the apical region by overlying ribs or clavicular shadows may be demonstrated by modification of the PA and AP #Xray https://t.co/MQSN1mqoOK
    Radiology Twitter Tweet: Why we do Apical view?
-To evaluate apex of the lung.
-To clarify anomaly seen on PA projection e.g. Interlobular effusion, 
    
Some Opacities obscured in the apical region by overlying ribs or clavicular shadows may be demonstrated by modification of the PA and AP 
#Xray https://t.co/MQSN1mqoOK
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  • 8:47 AM ﹒ Jan 07, 2022
    The difference between PA and AP chest #XRAY #radiology #Radiology_study #chest https://t.co/fKDkNE9MEQ
    Radiology Twitter Tweet: The difference between PA and AP chest
#XRAY #radiology #Radiology_study 
#chest https://t.co/fKDkNE9MEQ
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  • 10:41 PM ﹒ Jan 06, 2022
    - Align Medial sagittal plane to midline of cassette. - Ensure no rotation of thorax. - Top of film 4-5 cm above shoulders. - Place caste crosswise to avoid lateral cutoff. - Make exposure at end of second full inspiration. #Radiology_study #XRAY #Chest #Radiograph https://t.co/u3XCwknDuo
    Radiology Twitter Tweet: - Align Medial sagittal plane to midline of cassette. - Ensure no rotation of thorax.
- Top of film 4-5 cm above shoulders.
- Place caste crosswise to avoid lateral cutoff.
- Make exposure at end of second full inspiration.
#Radiology_study #XRAY #Chest #Radiograph https://t.co/u3XCwknDuo
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  • 10:41 PM ﹒ Jan 06, 2022
    AP Chest: • This projection demonstrates pathology involving the lungs, diaphragm, and mediastinum. Patient Position: --Patient is supine in cart. - If possible raised the head of cart or bed into a semi erect position. - Role patient shoulders forward by rotating arms medially
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  • 8:23 PM ﹒ Jan 06, 2022
    Central Ray: The horizontal central ray is centered in the midline at the level of T7 Normal PA Chest: Radiographic Anatomy Demonstrated Lungs, trachea, heart, major mediastinal vessels, diaphragm and ribs.
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  • 8:23 PM ﹒ Jan 06, 2022
    The patient is asked to place the backs of the hands on the waist at the sides. -The shoulders and arms are rolled forward to bring the scapulae towards the side of the chest. -Exposure is made on deep suspended inspiration. #radiology #XRAY #Radioloy_study https://t.co/5SnsAooMHt
    Radiology Twitter Tweet: The patient is asked to place the backs of the hands on the waist at the sides.
-The shoulders and arms are rolled forward to bring the scapulae towards the side of the chest.
-Exposure is made on deep suspended inspiration.
#radiology #XRAY #Radioloy_study https://t.co/5SnsAooMHt
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  • 8:23 PM ﹒ Jan 06, 2022
    Basic Patient Position: -The patient stands ERECT facing the cassette. -The cassette is raised so the top is 3cm above the skin margins above the apices, the patient's chin is rested on the top of the cassette holder. #XRAY #Radiology_study #radiology #chest
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  • 8:23 PM ﹒ Jan 06, 2022
    PA Chest. Indications for imaging: -Congenital abnormalities (cardiac, vascular etc) ASD, VSD. -Trauma pneumothorax, haemothorax, Infections, generalized, TB. -Cardiac investigations, cardiomegaly, LVF, heart failure, Pulmonary embolus, infections. #XRAY #radiology https://t.co/oMDYsvIKyS
    Radiology Twitter Tweet: PA Chest.
Indications for imaging:
-Congenital abnormalities (cardiac, vascular etc) ASD, VSD. -Trauma pneumothorax, haemothorax, Infections, generalized, TB.
-Cardiac investigations, cardiomegaly, LVF, heart failure, Pulmonary embolus, infections.
#XRAY #radiology https://t.co/oMDYsvIKyS
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  • 10:15 PM ﹒ Jan 05, 2022
    Radiographic Analysis:- Any structure, normal or pathologic, should be analyzed for: 1. Size 2. Shape and contour 3. Position 4. Density (You must know the 5 basic densities) #Radiology_study #XRAY #radiology #pathologic
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  • 9:00 PM ﹒ Jan 04, 2022
    .Air = low atomic # = x-rays get through = image is dark • Metal = high atomic # = x-rays blocked = image is light (white) 5 Basic Radiographic Densities • Air • Fat • Soft tissue/fluid • Mineral • Metal https://t.co/B1W6G3umIZ
    Radiology Twitter Tweet: .Air = low atomic # = x-rays get through = image is dark
• Metal = high atomic # = x-rays blocked = image is light (white)

5 Basic Radiographic Densities
 • Air
• Fat
• Soft tissue/fluid 
• Mineral
• Metal https://t.co/B1W6G3umIZ
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  • 9:00 PM ﹒ Jan 04, 2022
    How do x-rays passing through the body create an image? • X-rays that pass through the body to the film render the film dark (black) • X-rays that are totally blocked do not reach the film and render the film light (white) #Radiology_study #XRAY #Radiation #radiology
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  • 8:48 PM ﹒ Jan 04, 2022
    HANDLING AND STORAGE ARTIFACTS • A number of artifacts are caused by improper film storage conditions. • Image fog can result if the temperature or the humidity is too high or if the film bin is not shielded adequately from radiation.
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  • 8:48 PM ﹒ Jan 04, 2022
    Processing artifact • Any number of screen-film radiographic artifacts can be produced during film processing. • Most are pressure type artifacts caused by the transport system of the processor.e.g. -Roller Marks -Dirty Rollers -Chemical Fog
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  • 8:48 PM ﹒ Jan 04, 2022
    Radiographic artifacts occur in three areas: • Exposure • Processing • Handling #Artifact #Radiology #Radiology_study #XRAY #Radiograph
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  • 8:37 PM ﹒ Jan 04, 2022
    3. Desired anatomic structures in accurate alignment with each other 4. Maximum geometric integrity 5.Appropriate radiation protection 6. Best possible density, contrast, and gray scale, with minimal noise 7. No preventable artifacts
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  • 8:37 PM ﹒ Jan 04, 2022
    Characteristics of the Optimal Image 1. Demographic information (e.g., patient and facility name, time, date) 2. Correct markers in the appropriate position without superimposing anatomy of interest #XRAY #Radiology #Radiology_study #radiograph
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  • 3:57 AM ﹒ Jan 03, 2022
    factors influence the relative intensity of scatter radiation As scatter radiation increases, the radiographic image loses contrast and appears gray and dull. Three primary factors : ➢kVp, ➢field size, ➢and patient thickness. #radiation #XRAY
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  • 3:50 AM ﹒ Jan 03, 2022
    Two principal tools are used to control scatter radiation: beam-restricting devices and grids.
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  • 3:50 AM ﹒ Jan 03, 2022
    Spatial resolution is determined by focal-spot size and other factors that contribute to blur. ➢Contrast resolution is determined by scatter radiation and other sources of image noise. #radiation #XRAY #contrast
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  • 3:47 AM ﹒ Jan 03, 2022
    Beam-restricting devices are designed to control and minimize scatter radiation by limiting the x- ray field size to only the anatomy of interest. The three principal types of beam-restricting devices are: ➢aperture diaphragm, ➢cones or cylinders, ➢and collimators. #radiation
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  • 3:46 AM ﹒ Jan 03, 2022
    Scatter x-radiation produces noise, reducing image contrast and contrast resolution. It makes the image less visible. • Three factors contribute to increased scatter radiation: ➢ increased kVp. ➢ increased x-ray field size. ➢ and increased patient thickness. #radiation
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  • 3:42 AM ﹒ Jan 03, 2022
    The principal components of an automatic processor are: • the transport system • the temperature control system • the circulation system • the replenishment system • the dryer system
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  • 3:40 AM ﹒ Jan 03, 2022
    4. Fixing is followed by vigorous washing of the film to remove any remaining chemicals from the previous processing steps. 5. Finally, the film is dried to remove the water used to wash it and to make the film acceptable or handling and viewing.
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  • 3:40 AM ﹒ Jan 03, 2022
    3. the next step, fixing (Fixing the silver halide that was not exposed to radiation is the process of clearing it from the emulsion and hardening the emulsion to preserve the image).
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  • 3:40 AM ﹒ Jan 03, 2022
    2. the second step, developing(Developing is the stage of processing during which the latent image is converted to a visible image).
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  • 3:40 AM ﹒ Jan 03, 2022
    Sequence of Events in Processing a Radiograph 1. The first step in processing involves wetting the film to swell the emulsion, so that subsequent chemical baths can reach all parts o the emulsion uniformly. #xray #radiology
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  • 6:05 PM ﹒ Jan 02, 2022
    Radiographic film has two parts: the base and the emulsion.
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  • 2:03 PM ﹒ Jan 02, 2022
    • The radiographic intensifying screen emits visible light, which exposes the radiographic film placed between the two screens. • Although some x-rays reach the film emulsion, it is primarily light from the radiographic intensifying screens that exposes the radiographic film.
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  • 2:03 PM ﹒ Jan 02, 2022
    How is the image formed? IMAGE-FORMING: • x-rays exit the patient and expose the radiographic intensifying screen placed in the protective radiographic cassette.
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  • 8:56 PM ﹒ Jan 01, 2022
    The primary control of radiographic contrast is kVp. The primary control of OD is mAs.
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  • 8:18 PM ﹒ Jan 01, 2022
    Radiopacity is the degree of attenuation in a tissue. • Radiolucency is the degree of transmission in a tissue. • The greater the tissue attenuation, less radiation transmitted through the patient.
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  • 7:44 PM ﹒ Jan 01, 2022
    Procedures for Reducing Motion Blur:- 1)Use the shortest possible exposure time. 2)Restrict patient motion by providing instruction or using a restraining device. 3)Use a large source-to-image receptor distance (SID). 4)Use a small object-to-image receptor distance (OID).
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  • 7:44 PM ﹒ Jan 01, 2022
    Motion Blur • Movement of the patient or the x-ray tube during exposure results in blurring of the radiographic image.
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  • 7:41 PM ﹒ Jan 01, 2022
    B)Part density • An increase in density (grams/cm3) increases x- ray attenuation per cm of tissue. 3)Attenuating characteristics of the subject. • Photoelectric absorption increases dramatically with increasing atomic number. • Attenuation is higher of bone than soft tissue.
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  • 7:41 PM ﹒ Jan 01, 2022
    A)Patient Size (thickness) • With increased total thickness of tissue traversed by the x-ray beam, there are more atoms available for interactions (absorption and scatter) • Greater attenuation means that less radiation is transmitted through the patient; less exit radiation.
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  • 7:41 PM ﹒ Jan 01, 2022
    1. Subject Contrast Determining Factors of Subject Contrast: a. Patient Size b. Density c. Attenuating characteristics of the subject.
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  • 7:41 PM ﹒ Jan 01, 2022
    Factors affecting image characteristics Radiographic contrast factors The overall contrast of a radiograph depend on two factors: 1. Subject contrast 2. Film contrast
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  • 7:08 PM ﹒ Jan 01, 2022
    This is because different tissues absorb different amounts of radiation. Calcium in bones absorbs x-rays the most, so bones look white. Fat and other soft tissues absorb less and look gray. Air absorbs the least, so lungs look black.
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  • 7:08 PM ﹒ Jan 01, 2022
    What’s x ray? X-rays are a type of radiation called electromagnetic waves. X-ray imaging creates pictures of the inside of your body. The images show the parts of your body in different shades of black and white.
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  • 7:06 PM ﹒ Jan 01, 2022
    Contrast resolution: is the ability to distinguish anatomical structures of similar subject contrast such as liver–spleen and gray matter–white matter.
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  • 7:05 PM ﹒ Jan 01, 2022
    Spatial resolution: refers to the ability to image small objects that have high subject contrast, such as a bone–soft tissue interface, a breast microcalcification, or a calcified lung nodule.
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  • 7:05 PM ﹒ Jan 01, 2022
    Resolution • is the ability to image two separate objects and visually distinguish one from the other.
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  • 5:42 PM ﹒ Jan 01, 2022
    Focal-spot blur occurs because the focal spot is not a point. Focal-spot blur is the most important factor for determining spatial resolution.
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  • 5:42 PM ﹒ Jan 01, 2022
    Unequal magnification of different portions of the same object is called shape distortion. • DISTORTION depends on: ➢Object thickness ➢Object position ➢Object shape
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  • 5:42 PM ﹒ Jan 01, 2022
    3. Sharpness • Radiographic density changes define the boundary of an object or divided two adjacent areas. • Sharpness is concerned with how suddenly blackening changes at the boundary between adjacent parts GEOMETRIC FACTORS : ➢ Magnification ➢ Distortion ➢Focal-spot blur
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  • 5:42 PM ﹒ Jan 01, 2022
    ❖Contrast :Is the ability to differentiate between adjacent areas in the image. ❖Contrast : A difference in densities on adjacent anatomic structures.
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  • 5:42 PM ﹒ Jan 01, 2022
    2. Contrast To be able to identify a feature on an image, it must appear different form its surroundings. On a radiograph, a structure must be of a different optical density (shade of grey) from adjacent structure.
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  • 5:42 PM ﹒ Jan 01, 2022
    Signal-to-noise ratio: Under optimum conditions the magnitude of the signal is very much greater than the magnitude of the noise. The signal-to-noise ratio is said to be high. Under adverse conditions the signal-to- noise ratio is low, and much information is lost.
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  • 5:42 PM ﹒ Jan 01, 2022
    1)Noise Variations in levels of grey in the image that are distributed over its area, but unrelated to structures being imaged.
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  • 5:42 PM ﹒ Jan 01, 2022
    Image characteristics Real images display four essential characteristics: 1) noise 2) Contrast 3) Sharpness 4) Resolution.
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  • 10:47 PM ﹒ Dec 31, 2021
    2.Subject contrast is determined by the size, shape, and x-ray–attenuating characteristics of the anatomy that is being examined and the energy (kVp) of the x-ray beam.
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  • 10:47 PM ﹒ Dec 31, 2021
    Radiographic contrast is the product of two separate factors: 1.Image receptor contrast is inherent in the screen- film combination and is in influenced somewhat by processing of the film.
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  • 10:45 PM ﹒ Dec 31, 2021
    Radiographic contrast: When a high-quality radiograph is placed on an illuminator, the differences in Optical Density are obvious in the image. Such OD variations are called radiographic contrast.
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  • 10:42 PM ﹒ Dec 31, 2021
    Direct radiography (DR):Does not use a cassette or an IP. A flat panel detector built into the x-ray table or device captures the x-ray image and converts it into digital format. The image is then viewed on a computer monitor or printed out on film.
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  • Sensitive Content!
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  • Sensitive Content!
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  • 10:42 PM ﹒ Dec 31, 2021
    #ثريد ل Image receptor types: Image receptor:Is the device that receives the energy of the x-ray beam and forms the image of the body part. In diagnostic radiology, the IR will be one of the following four devices: 1. Cassette with film. 2. Image plate (IP). 3. Direct radiography
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  • 10:21 PM ﹒ Dec 31, 2021
    بسم الله..نبدأ
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