EXPERT
Sarah Khan, MD
Radiologist
Dr. Sarah Khan is a radiologist practicing in Southlake, TX. Dr. Khan specializes in diagnosing and treating injuries and diseases using medical imaging techniques such as mammogram with 3D , breast ultrasound, and body ultrasound. These techniques offer accurate visibility to the inside of the patients body and help to detect otherwise hidden illnesses so that they can be treated quickly and efficiently.
Sarah Khan, MD
- Southlake, TX
- Accepting new patients
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Dislocated finger?
A dislocated would be obvious on xray but if your certain you popped the finger back into place it will be hard to prove you had a dislocation after manipulation.
Can CT contrast make you nauseous?
Yes - contrast can make a subset of folks nauseated. It’s something you should report immediately to your technician that performed exam as it could be a side effect that warrants READ MORE
Yes - contrast can make a subset of folks nauseated. It’s something you should report immediately to your technician that performed exam as it could be a side effect that warrants watching you after the test and to make sure the radiologist on site checks you out and documents it on your resultant CT report.
Mammogram with breast implants
Most institutions train their techs to perform mammograms safely and gently (albeit everyone’s pain tolerance isn’t the same). Just talk to the tech in the room and tell her it’s READ MORE
Most institutions train their techs to perform mammograms safely and gently (albeit everyone’s pain tolerance isn’t the same). Just talk to the tech in the room and tell her it’s too tight or painful and they’ll adjust the pressure in real time to avoid any potential mishap.
I haven’t seen a ruptured breast implant due to a mammogram in my entire career. In theory implant rupture is possible especially if it’s an old frail implant.
I haven’t seen a ruptured breast implant due to a mammogram in my entire career. In theory implant rupture is possible especially if it’s an old frail implant.
Do you need contrast for kidney stones CT scan?
If the doctor kniws you have a history of kidney stones - I would recommend CT without IV contrast .
Can I shower before a PET scan?
Yes, you can shower before your PET scan as it poses no harm or failure to diagnose.
CT scan meaning?
As radiologist we must read everything in the picture. So we try to mention all organs and structures. The radiologist is making it clear no cancer in the bones to account for READ MORE
As radiologist we must read everything in the picture. So we try to mention all organs and structures. The radiologist is making it clear no cancer in the bones to account for any pain you migh be having
CT scan?
The EKG leads typically don’t pose a problem.
What if I'm allergic to contrast?
Allergy to contrast must be documented on the CT report so your physician can advise premedication on your next CT scan. Maybe even steroids in advance depending on the severity READ MORE
Allergy to contrast must be documented on the CT report so your physician can advise premedication on your next CT scan. Maybe even steroids in advance depending on the severity of the allergic reaction.
How do I prepare for a lung CT scan?
A CT of the lung will include the uppermost portion of the abdomen during inspiration. In this case, a portion of the upper abdominal organs will include the liver, spleen, pancreas, READ MORE
A CT of the lung will include the uppermost portion of the abdomen during inspiration. In this case, a portion of the upper abdominal organs will include the liver, spleen, pancreas, aorta, etc, and the gallbladder. To see what’s in the gallbladder we request our pts not eat or drink before the exams in order to look at the distended gallbladder.
I had a transvaginal ultrasound?
A transvaginal ultrasound probe should only go into the vagina.
Are CT scans claustrophobic?
A CT scan for the most part is not claustrophobic for the majority of patients. This phenomenon is more likely in patients undergoing MRI.
How often should you get a lung CT scan?
A CT scan emits radiation like an X-ray. So- it’s important to perform a CT for a specific reason.
Can a CT scan detect a bone infection?
Yes a CT. A scan can be used to help detect a bone infection.
Can a CT scan detect a lung infection?
Yes a CT scan can detect infections. However, the clinical history is equally important to make that determination. Typically- such a finding would be followed clinically and radiographically READ MORE
Yes a CT scan can detect infections. However, the clinical history is equally important to make that determination. Typically- such a finding would be followed clinically and radiographically to assess concordance.
Do you have to drink barium for a CT scan without contrast?
Depending on the reason for the exam or situation you don’t have to drink contrast before a ct scan. For example, no need for oral contrast if you can’t hold down anything or READ MORE
Depending on the reason for the exam or situation you don’t have to drink contrast before a ct scan. For example, no need for oral contrast if you can’t hold down anything or a ct test for renal stones.
However, it wouldn’t hurt to take oral contrast before a ct scan as it would improve the ability to find incidental gastrointestinal findings or true lesions within the bowel like tumors or polyps. It could also help delineate bowel from other adjacent normal or abnormal structures.
However, it wouldn’t hurt to take oral contrast before a ct scan as it would improve the ability to find incidental gastrointestinal findings or true lesions within the bowel like tumors or polyps. It could also help delineate bowel from other adjacent normal or abnormal structures.
When should you get an MRI for a headache?
Should document how often and how long your headaches last. Also, if anything triggers the headache and what relieves you of the headache. Based on these factors, your physician READ MORE
Should document how often and how long your headaches last. Also, if anything triggers the headache and what relieves you of the headache. Based on these factors, your physician may want to pursue an MRI or CT of the brain. An MRI uses NO radiation and a CT scan uses X-rays (radiation) to acquire images.
Why do you have to fast for a PET scan?
The radioisotope that is used in PET is a glucose transporter. This PET radioisotope which also contains glucose will go to any metabolically active areas in the body which sucks READ MORE
The radioisotope that is used in PET is a glucose transporter. This PET radioisotope which also contains glucose will go to any metabolically active areas in the body which sucks up the glucose. However, if the glucose levels are elevated from food or drink taken before the exam, then the level of insulin will increase. When insulin levels increase, our muscles will take up the glucose or sugar instead of the cancer hungry cells that seek the glucose in the PET radiotracer. So basically the PET radioactive tracer may not go to the areas of interest which results in a suboptimal exam.
How long do x-ray images take to be read?
An X-ray of a single body part can be read within minutes after acquisition of the images by the reading radiologist as long as they’re hung properly and taken with correct exposure READ MORE
An X-ray of a single body part can be read within minutes after acquisition of the images by the reading radiologist as long as they’re hung properly and taken with correct exposure (assuming they are acquired digitally and sent to the radiologist digitally).
How long does a CT scan for kidney stones take?
A CT scan of the abdomen to evaluate kidney stones takes approximately 5 minutes after being placed on a CT scanner. I would also include CT of the pelvis as a stone may fall out READ MORE
A CT scan of the abdomen to evaluate kidney stones takes approximately 5 minutes after being placed on a CT scanner. I would also include CT of the pelvis as a stone may fall out of the kidney and lodge in the ureter, bladder or sometimes seen in the urethra on its way out of the body during urination.
What type of CT is used for cancer screenings?
Any CT can be used to perform a body scan which takes a few minutes. There isn’t a specific CT scan that is used to detect cancer. However, most insurances do not cover CT whole READ MORE
Any CT can be used to perform a body scan which takes a few minutes. There isn’t a specific CT scan that is used to detect cancer. However, most insurances do not cover CT whole body screening so the patient must pay for the exam out of pocket.
