Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
37 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
Pixel__________determines contrast and latitude. |
Depth |
|
|
|
In QC, what indicates the ability of an imaging procedure to generate clinically useful image contrast? |
Contrast to Noise Ratio |
|
|
|
Pixel __________ determines special resolution. |
Size |
|
|
|
In breast ultrasound, posterior shadowing is a feature of a ______________ lesion. |
Suspicious |
|
|
|
In breast ultrasound, hyper echoic (echoes brighter than fat) is a feature of a _________ lesion |
Benign |
|
|
|
Window width controls: |
Contrast |
|
|
|
What QC test adjusts for a shift in pixel sensitivity and how often is it done? |
Detector calibration Weekly |
|
|
|
On a laser printers QC, the function is to assure densities of weekly test films are within. -/+____ % of the average operating level |
0.15 |
|
|
|
QC test that’s used by GE only- addresses the resolution of the final image |
Modulation Transfer Function (MTF) |
|
|
|
What QC test assures a high resolution image at an adequate dose? |
Signal to Noise Ratio (SNR) |
|
|
|
Minimum baseline for SNR is |
40 or higher |
|
|
|
Characteristic NRG created using Molybdenum targets/ anode material |
17.6 and 19.7 kev |
|
|
|
Characteristic NRG produced using a Rhodium target / anode material |
20.3 and 22.7 kev |
|
|
|
In breast ultrasound, a lesion that is mildly hypo echoic, is probably: |
Benign |
|
|
|
In breast ultrasound, a lesion that is mildly hypo echoic, is probably: |
Benign |
|
|
|
In breast ultrasound, a lesion that’s anechoic (no internal echoes) is probably: |
Benign |
|
|
|
Luminal Epithelium |
Where cancer begins at the cellular level. It holds the milk producing cells of the TDLU |
|
|
|
Medial thoracic mammary atery |
Provides 60% of the blood supply for the medial aspect of the breast. |
|
|
|
Axillary and Intercostal arteries |
Supply 40% of the blood supply for the lateral breast |
|
|
|
Parasternal lymph nodes receive ________% of lymph drainage |
20% |
|
|
|
Posterior intercostal nodes receive _____% of lymph drainage. |
5% |
|
|
|
Lesions that are bright on T2 fat suppressed images on MRI are more likely: |
Benign |
Cysts, lymph nodes, fat necrosis |
|
|
A lesion that shows no enhancement, or slow enhancement after contrast on MRI is most likely: |
Benign |
|
|
|
Represents areas of increased glandularity on one breast that’s not mirrored on the other side. May either be benign or malignant. |
Architectural Distortion |
|
|
|
The range of value over which a system can respond. |
Dynamic Range |
|
|
|
Common scintillator material |
Cesium Iodide (CsI) doped with Thallium (Ti)- the light-generating part of an indirect system |
|
|
|
In MRI of the breast, a large value of the T1 or T2 will indicate: |
A long, gradual relaxation time |
|
|
|
Molecule with a smaller T1 and a longer T2 are : |
Smaller |
|
|
|
Sound cannot travel through a : |
Vacuum |
|
|
|
Sound travels poorly through: |
Gasses |
|
|
|
What scans the breast to locate a cancer based on the vast amount of glucose/sugar used by cancer cells? |
PEM Scanning |
|
|
|
Cone beam computed tomography |
Based on the principle of angiogenesis- can’t detect calcifications - Mammo is still better |
|
|
|
Imagining technology that uses choline (the functional breast cancer byproduct): |
Magnetic Resonance Spectroscopy (MRS) |
|
|
|
How long do Brachytherapy treatments typically last? |
5 to 9 days |
|
|
|
The benefits of tamoxifen are negligible after _______ years |
5 |
|
|
|
How long does a Mammography facility have to report a suspicious finding to a patients physician? |
3-5 days |
|
|
|
How many CEUs in Mammography are required in the 36 months before inspection? |
15 |
|
