CT Scan Modes Compared (Axial vs Helical)

[@PraisingWithFriends]

I just now stumbled upon your channel. I appreciate you so much! Great info!

[@HowRadiologyWorks]

Thanks for the Praise 🤗

[@michaelmontgomery5767]

Canon has the ability to vary the pitch throughout the scan (i.e. Variable Helical Pitch). For body scans the system is set up to have low pitch through the heart and higher pitch thought the body in one run. Great for ED screening.

[@HowRadiologyWorks]

Thanks for mentioning this specific point for chest scanning transitioning to a run off.

[@01rai01]

Can you please explain volume scanning and why it cones/ tapers in the ends of the scan range

[@HowRadiologyWorks]

Sure for wide cone axial scanning at the edge of the volume in the corners there is a shorter range of view angle data collected. So in voxels in the corner this leads to artifacts, that is why the vendors have a mask in the corner of wide coverage systems

[@SrikanthNalla17]

Is the patient exposed to more harmful radiation in 128 slices CT scan compared to 32 or 64 slice CT scan??

[@HowRadiologyWorks]

There is not a significant difference in dose efficiency for 64 to 128 rows. The main difference comes from 8 row to 32 row where there is less wasted dose from the penumbra (or edge row effects)

[@ranjit12345ful]

Can u please make a video on CT detectors....how does number of detector rows effect the number of slices ....effect on dose to patient such kind of things....thank you dear....God bless for the good work :)

[@HowRadiologyWorks]

Great ideas thanks for the suggestions

[@DenMnd]

many thanks, amazing video 👍

[@عمادالزهراني-ح5ب]

شكرا لك لدي اختبار فيزياء التصوير المقطعي

[@HowRadiologyWorks]

You’re welcome, good luck on the exam

[@عمادالزهراني-ح5ب]

@@HowRadiologyWorks bro can you give me answe pls 4 charasterstic of helical scanning This question in the exam after 3 days and I don’t know what’s the answer thank you brother ❤️

[@عمادالزهراني-ح5ب]

Four charasterstic of helical scanning

[@TheNettforce]

@@عمادالزهراني-ح5ب sorry is there more to the question as it wasn’t written very specifically? Is it about the acquisition or the images? It may have just been a very broad question where they wanted you to mention 4 things on helical scanning

[@عمادالزهراني-ح5ب]

@@TheNettforce 4 things in helical scanning we benefit from it I think its General question, I searched for the answer in goggle and my book i don’t get the answer help me pls and think you for your interest you are a good man 🤚🏻❤️

[@hayongram]

your video is good :)

[@HowRadiologyWorks]

Thanks 🙏

[@talkingtreeswithprofessort8372]

8:08 burn

[@HowRadiologyWorks]

pubmed.ncbi.nlm.nih.gov/34752014/

[@rademm8924]

You talks too fast. Difficult for non native English speakers to understand

[@HowRadiologyWorks]

Sorry Rad , thanks for the input. I will try to talk more clearly. If you rewatch the missed section does that help?

[@SrikanthNalla17]

Rad can watch the video at .75x or .50x speed@@HowRadiologyWorks

[@tesla1161]

Dude. Pause and listen again. He is explaining very well.