How is source-to-object distance calculated?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Prepare for the Clover Learning Radiography Test. Study with comprehensive tools including flashcards, multiple choice questions, and detailed explanations. Enhance your radiography skills and ace the exam!

Multiple Choice

How is source-to-object distance calculated?

Explanation:
Source-to-object distance is the distance from the X-ray tube (the source) to the part of the patient being imaged. The total distance from source to image receptor (SID) equals the sum of that distance (SOD) and the distance from the object to the receptor (OID). So the source-to-object distance is SID minus OID. For example, with a SID of 100 cm and an OID of 10 cm, the SOD is 90 cm. This relationship also shows why increasing OID (with SID fixed) makes the image larger (more magnification) because it reduces the SOD, and magnification M equals SID divided by SOD.

Source-to-object distance is the distance from the X-ray tube (the source) to the part of the patient being imaged. The total distance from source to image receptor (SID) equals the sum of that distance (SOD) and the distance from the object to the receptor (OID). So the source-to-object distance is SID minus OID. For example, with a SID of 100 cm and an OID of 10 cm, the SOD is 90 cm. This relationship also shows why increasing OID (with SID fixed) makes the image larger (more magnification) because it reduces the SOD, and magnification M equals SID divided by SOD.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy