Radiological MCQS

Radiological MCQS Radiological MCQs is your go-to resource for practicing and mastering radiology concepts through multiple-choice questions.
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Covering anatomy, techniques, pathology, safety, and image interpretation. Medical aspirants can share their X ray ,CT and Mri scan in short videos for interpretation.

A 68-year-old woman presents with a 5-month history of progressively worsening left knee pain and swelling, with restric...
08/24/2026

A 68-year-old woman presents with a 5-month history of progressively worsening left knee pain and swelling, with restricted movement and reduced mobility. There is no history of trauma, fever, or systemic illness. Examination reveals a firm, tender distal femoral mass. What is the most likely diagnosis?

•Neer Method Tangential Projection – Supraspinatus Outlet: Shoulder (Trauma) •Clinical indications :- Fracture or disloc...
08/24/2026

•Neer Method Tangential Projection – Supraspinatus Outlet: Shoulder (Trauma)

•Clinical indications :- Fracture or dislocation of the proximal humerus/scapula.
Demonstrates the coracoacromial arch and supraspinatus outlet for possible shoulder impingement.
Useful in suspected trauma when standard positioning is difficult.

•Patient position :- Patient erect or recumbent.
Position is usually more comfortable for the patient.

•Part position :- Place the affected scapula against the IR. Rotate patient into an anterior oblique position, similar to a lateral scapula.
Palpate the superior angle of scapula and AC joint.
Rotate until the imaginary line between these points is perpendicular to the IR.Abduct the arm slightly if tolerated.Do not rotate the arm if fracture or dislocation is suspected.

•Central Ray :- Angle 10°–15° caudal.
Center posterior to and pass through the superior margin of the humeral head.
CR enters approximately 1 inch (2.5 cm) superior to the medial aspect of the scapular spine.

A 30-year-old man presented with severe back pain and right shoulder pain following a high-speed motor vehicle collision...
08/23/2026

A 30-year-old man presented with severe back pain and right shoulder pain following a high-speed motor vehicle collision. CT and 3D reconstruction of the thoracic spine were performed.What is the most likely diagnosis?
(Xray of same patient is pinned in comment box)

Lateral Decubitus Position — AP Projection (Chest)•Clinical Indications :- Demonstrates small pleural effusions by showi...
08/23/2026

Lateral Decubitus Position — AP Projection (Chest)

•Clinical Indications :- Demonstrates small pleural effusions by showing air–fluid levels in the pleural space.
Demonstrates small amounts of pleural air, suggesting pneumothorax.

Technical Factors :-
SID: Minimum 72 in (180 cm)
IR: 14 × 17 in (35 × 43 cm), landscape
Grid: Yes
kVp: 110–125

Marker: Decubitus (decub) marker

•Patient Position :- Place patient on a cardiac board/radiolucent pad.
Right lateral decubitus: patient lies on right side.
Left lateral decubitus: patient lies on left side.
Chin extended; both arms raised above the head to clear the lungs.
Back firmly against the IR.
Knees slightly flexed.
Coronal plane parallel to IR, with no body rotation.

•Part Position :- Adjust IR height to center the thorax.
Center the midsagittal plane to the IR.
T7 should be approximately 1 inch (2.5 cm) above the vertebral prominence.

•Central Ray (CR) :- Horizontal CR, directed to the center of the IR at the level of T7.
T7 is approximately 3–4 inches (8–10 cm) below the jugular notch.Horizontal beam is essential to demonstrate:
Air–fluid levels
Pneumothorax

•Collimation :- Collimate on four sides to include the entire lung fields.
Superior border approximately at the level of the vertebral prominens.
Respiration
Make exposure at the end of the second full inspiration.

•Important Positioning Point :- For suspected pleural effusion: place the affected side DOWN.
For suspected pneumothorax: place the affected side UP.
Include both lungs whenever possible.
Always use the correct anatomic side marker.

Lateral Weight-Bearing Projection – Foot•Clinical Indications :- Demonstrates the bones of the foot under full weight-be...
08/22/2026

Lateral Weight-Bearing Projection – Foot

•Clinical Indications :- Demonstrates the bones of the foot under full weight-bearing conditions.
Evaluates the longitudinal arch of the foot.
May demonstrate injury to supporting ligaments, such as in Lisfranc joint injuries.
Bilateral views are often obtained for comparison.

Technical Factors
SID: 40 inches (100 cm)
IR: 24 × 30 cm (10 × 12 inches), portrait for unilateral
Bilateral: 14 × 17 inches (35 × 43 cm), landscape
Grid: Nongrid
kVp: 60–70

•Patient Position :- Patient stands erect with weight placed on the affected foot.
Place the foot on a suitable step/stool or radiographic foot rest.
Provide support for the patient to maintain balance.
For the lateral view, the affected side is closest to the IR.

•Part Position :- Align the long axis of the foot with the long axis of the IR.
Obtain the opposite foot in the same manner when bilateral comparison is required.

•Central Ray (CR) :- Direct the CR horizontally.
Center at the base of the third metatarsal.

•Collimation :- Collimate to include the entire foot and surrounding soft tissues, from the toes through the calcaneus and approximately 1 inch (2.5 cm) of distal tibia.

•Evaluation Criteria :- Entire foot demonstrated, including approximately 1 inch of distal tibia and fibula.
Distal fibula should be superimposed over the posterior half of the tibia.
Heads of the metatarsals should be superimposed if there is no rotation.
Longitudinal arch should be demonstrated in its entirety.
No motion; cortical and trabecular detail should be sharply visualized.

A 60-year-old man with a 30-year history of thyroid disease presents with one month of painful enlargement of a left-sid...
08/21/2026

A 60-year-old man with a 30-year history of thyroid disease presents with one month of painful enlargement of a left-sided neck swelling, progressive difficulty in breathing, and intermittent dysphagia to solids. A neck X-ray was performed.
What are the findings and most likely diagnosis?
(Note: The lateral view is pinned in the comment box for reference)

Erect Mediolateral Projection – Humerus•Patient & Part Position :- Patient erect, facing the IR.Place the back of the af...
08/21/2026

Erect Mediolateral Projection – Humerus

•Patient & Part Position :- Patient erect, facing the IR.
Place the back of the affected arm/shoulder against the IR.
Elbow partially flexed and arm positioned so the humerus is in contact with the IR.
Internally rotate the arm as needed to place the epicondyles perpendicular to the IR.
Adjust IR height so the shoulder and elbow joints are equidistant from the ends of the IR.

•CR :- Perpendicular to the IR, centered to the midpoint of the humerus.

•Collimation:- Collimate to include the entire humerus, with the shoulder and elbow joints included.

•Respiration :- Suspend respiration during exposure.

•Evaluation :- Entire humerus demonstrated in a true lateral projection.
Medial and lateral epicondyles superimposed.
No motion; adequate exposure with clear bony trabecular detail.

A 34-year-old female presented to the emergency department following a landslide with multiple injuries involving the ba...
08/20/2026

A 34-year-old female presented to the emergency department following a landslide with multiple injuries involving the back and pelvis. She developed neurological deficits involving the lower limbs with bowel and bladder dysfunction. CT scan was performed. What is the most likely diagnosis?

Transthoracic Lateral Projection – Proximal Humerus Lawrence Method — TraumaClinical Indications :- Fractures or disloca...
08/20/2026

Transthoracic Lateral Projection – Proximal Humerus Lawrence Method — Trauma

Clinical Indications :- Fractures or dislocations of the proximal humerus.

Exposure time: Minimum 3 seconds; 4–5 seconds preferred when using orthostatic breathing technique.
Long exposure blurs the ribs and lung markings while keeping the proximal humerus relatively sharp.

Patient Position :- Patient may be erect or supine; erect is preferred if tolerated.

Erect: Place the patient in a lateral position with the affected side against the IR.

Part Position :- Place the affected arm alongside the body in neutral rotation; depress the shoulder if possible.Raise the unaffected arm and place the hand over the head.
Elevate the unaffected shoulder as much as possible to prevent superimposition over the affected shoulder.
Center the surgical neck of the humerus to the CR/IR.
Keep the thorax in a true lateral position, or slightly rotate the unaffected shoulder anteriorly, to minimize superimposition of the humerus by the thoracic vertebrae.

Central Ray :- CR perpendicular to the IR, directed through the thorax at the level of the affected surgical neck of the humerus.
If the patient cannot adequately elevate the unaffected shoulder: angle the CR 10°–15° cephalad.

36-year-old male patient was seen in the emergency room with chest pain SOB, and severe abdominal pain for several days,...
08/19/2026

36-year-old male patient was seen in the emergency room with chest pain SOB, and severe abdominal pain for several days, associated with nausea and episodes of vomiting. He denied fever or change in bowel habits.chest x ray was ordered what are the findings and diagnosis?

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