Posted on April 29th, 2017 by
9 Weeks Pregnant, 9 Weeks

9 Week Embryo

What Does Diagnostic Mean?

Anything “diagnostic” describes a test performed to try to find a problem. So, diagnostic utrasound is ordered to rule out problems in pregnancy for mom and baby. Most people are very familiar with ultrasound but most consider it a fun and exciting event allowing you to see your baby and determine gender. However, first and foremost, it is a very important diagnostic tool used by your doctor to find structural abnormalities, follow fetal growth, and determine multiples. And this only scratches the surface!

What Do I Really Do When I Scan?

In a nutshell, my job requires me to see what’s in there and to make a report about it. More intricately speaking, I have to document with images and measurements everything I can see relative to fetal and maternal anatomy. Of course, what I can see and need to document all depends on how far along you are, in other words, your gestational age. Once I write a detailed report, I can present a complete ultrasound picture of your case to your physician.

What Things Can I See on Mom?

A few organs and measurements we try to see on mom are as follows:

  • The uterus and any pathology (like fibroids which are muscular tumors and very common)
  • The ovaries (those become obscured later as the uterus gets larger)
  • The cervix, which holds in the pregnancy and is sometimes observed in the 2nd trimester


What Things Can I See on Baby?

What parts we can see on Baby varies greatly depending on your gestational age. But a few things we look for are:

  • Baby’s size, to determine age or follow growth
  • Internal organs, depending on age, include the brain, heart, stomach, bladder and kidneys
  • Upper and lower extremities (arms and legs), again, depending on age. We try to see fingers and toes on your anatomy screen, but they can be a challenge! ..especially if the fists are closed in a ball.
  • Baby’s spine
  • Baby’s umbilical cord
  • The placenta and where it’s located
  • And last but not least! Maybe, possibly, if all the stars align and Baby cooperates, you just might be able to find out fetal sex.


How Does It Work?

Ultrasound is just that..sound that is beyond human hearing.  Sound waves, much like a fish finder, are sent from crystals in the transducer (the probe placed in the vagina or rubbed on your belly) and transmitted with the help of the ultrasound gel.  The waves penetrate the tissues directly below the probe until they reach Baby. They bounce back and create the image you see on the monitor.  Things like the size of the patient and fetal position can limit what parts we see and how well we can see them on the examination.

Many other diagnostic ultrasound examinations are performed on many other parts of the body, as well. Ultrasound is THE most technologist-dependent modality there is.  This means the machine does nothing without someone operating it. This is precisely why fetal sex is still incorrectly guessed! If the observer, or person holding the probe, is not very experienced at looking at fetal sex..oops!..wrong sex. And we’ve ALL heard those stories, haven’t we?!

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Thanks for reading! Feel free to email at

wwavblogger, RDMS
wwavblogger, RDMS

Comments: 8 Comments »

8 thoughts on “Diagnostic Ultrasound in a Nutshell..

    • wwavblogger, RDMS wwavb says:

      Thanks so much and glad you enjoyed it! Please subscribe to my blog to be automatically updated on new posts through email. You can always opt out. Thanks again for commenting!

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  1. Adrian says:

    Your post, Diagnostic ultrasound in a nutshell.. – Womb With a View Blog, is really well written and insightful. Glad I found your website, warm regards!

    • wwavblogger, RDMS wwavb says:

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