🏷️ LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION →
Log in
Biology
1
answer
0
watching
72
views

1. What do you expect the CT number for muscle for a 50 keV X-ray CT scan?

2. What do you expect the CT number for soft tissue for a 50 keV X-ray CT scan?

Watch
1
answer
0
watching
72
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Bunny Greenfelder
Bunny GreenfelderLv2
28 Sep 2019

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share

Related textbook solutions

Molecular Cell Biology
8 Edition,
Lodish
ISBN: 9781464183393
Biology: Science for Life with Physiology
6 Edition,
Belk
ISBN: 9780134555430
Biology
2nd Edition, 2013
Openstax
ISBN: 9781947172517
Concepts of Biology
OER Edition,
Openstax
ISBN: 9781938168116
Essentials of Biology
5 Edition,
Mader
ISBN: 9781259660269

Related questions

1. What would your first response to a patient who is requesting the results of the last CT scan of his kidneys?

2. Explain how you would handle this situation.

3. What type of incoming call was this?

4. What type of condition did this patient's symptoms indicate?

5. What are some other symptoms of this condition?

A piece of shrapnel from a roadside IED penetrated the tissue beneath the skull and posterior to the temporomandibular joint. The patient exhibits weakness in the upper body and can no longer move their left shoulder very easily or turn their head to the left. What Cranial nerve might be affected? the piece of shrapnel shows up on a ct scan and is only a tiny sliver of metal which is slowly shrinking as it dissolves in the tissue fluid. the nerve it affected was nearly severed as the metal passed through. what is the prognosis for the soldier regaining use of that part of his body?

Plese type the answers

1. In mammographic examinations, the breast is compressed between two plates. Answer the following with a brief explanation.

a. Is the geometric unsharpness (blurring) increased or decreased by compression?

b. Why is the image contrast improved by this procedure?

c. Is the required x-ray dose for a given image signal-to-noise ratio (SNR) higher or lower with compression?

2. Two X-ray images of the hand are shown in Figure 2.39. One corresponds to an x-ray beam with an effective energy of 140 keV and the other to an effective energy of 50 keV. Explain which is which, and the reasons for the difference in image contrast and signal intensity.

3. Planar x-ray images of a horse’s leg are shown in Figure 2.40. In (a), the kVp and tube current (mA) are chosen to give high contrast between the bone and surrounding tissue. Explain how the kVp and mA settings would have to be changed (increased, decreased, remain constant) to give the images shown in (b) and (c).

4. An acceptable abdominal radiograph can be obtained with technique factors of (1) 74 kvP, 120 mAs or (2) 82 kvP, 80 mAs. Discuss the reasons for selecting one technique over the other.

5. A dedicated chest imaging system is designed to use radiographic film of size 14 x 17 in (35 x 43 cm). If the source-to-imager distance (SID) is 180 cm and the source-to-diaphragm distance (SDD) is 10 cm, what diaphragm opening will allow an unexposed border of 1 cm around the film?

Weekly leaderboard

Home
Homework Help 3,900,000
Biology 460,000
Start filling in the gaps now
Log in