Our previous blog provided a comprehensive overview of various types of ultrasound transducers, including linear, convex, and phased array. Now, it’s time to take a step further and explore endocavitary transducers, their key characteristics, medical applications, and their top models used in medical imaging!
An Introduction to Endocavitary Transducers
Although ultrasound transducers like linear or other types can provide a visual image of internal body structure, some parts can not be seen precisely. This is where endocavitary transducers come into the picture.
An endocavitary transducer, also called an endocavitary probe, is a specialized ultrasound device used for internal imaging. Unlike other types of transducers, such as linear, convex, and phased array, which are applied externally on the body, endocavitary probes are placed into body cavities like the vagina or rectum to deliver detailed images of internal organs and structures.
Endocavitary probes provide more transparent and precise imaging, especially in areas that are challenging to examine by other types of traditional ultrasounds.
How Do Endocavitary Transducers Work?
As mentioned earlier, endocavitary transducers are used inside the body to capture images of internal structures and tissues. Because they need to be inserted into the body, these probes are designed with a slim, elongated shape for easy insertion. They often have a curved or angled tip to help reach areas that are hard to visualize with external ultrasounds. To better understand how these transducers work, let’s look at an example:
During gynecological exams, a transvaginal ultrasound is frequently paired with an endocavitary transducer. In this case, the probe is inserted into the vaginal canal to produce detailed images of the uterus and ovaries. This helps doctors detect conditions like fibroids, ovarian cysts, or even early pregnancy complications that might not be visible with an external ultrasound. This internal method allows for sharper images and more accurate diagnoses in these delicate areas.
What Are the Key Characteristics of Endocavitary Transducers?
To have a better understanding of endocavitary transducers, keep reading to learn about some of their standout features in medical imaging:
Internal Imaging Capability
The most prominent features of endocavitary transducers are their ability to be placed into the body cavities (vagina, rectum) to provide high-resolution images of internal structures that are difficult to capture externally by other types of transducers.
Real-Time Imaging
Endocavitary transducers offer real-time visualization, enabling healthcare professionals to observe dynamic processes, such as fetal development or organ function, during the procedure simultaneously.
Sterilizable
As endocavitary transducers are inserted directly into the internal body cavities, they are specifically designed for easy cleaning and sterilization between uses, ensuring the highest level of patient safety.
Ergonomic Design
These probes are generally slim and elongated, featuring an ergonomic shape that allows for easy insertion and smooth maneuverability within body cavities.
What Are the Medical Applications of Endocavitary Transducers?
Endocavitary transducers have various medical applications. Here is an outline of three crucial types of endocavitary transducers and their use cases:
Endovaginal Transducers
These types of endocavitary transducers are used for transvaginal ultrasounds, where the transducer is placed into the vagina to deliver images of the reproductive organs, such as the uterus and ovaries. They are particularly useful in gynecological exams and early pregnancy assessments.
Endorectal Transducers
Another type of endocavitary transducer is called endorectal. These are applied to transrectal ultrasounds (TRUS), where the transducer is placed into the rectum to visualize structures such as the prostate gland in men. These probes are commonly utilized for diagnosing prostate-related conditions and guiding biopsy procedures.
Endocavity Transducers
Endocavity transducers involve broadly any types of transducers that are inserted into the body for internal imaging, whether vaginal, rectal, or other. They provide detailed views of internal organs.
Endocavitary Transducers vs Convex Transducers
There are different types of ultrasound, and understanding their differences will help you make the right choice. Below is a comprehensive comparison between endocavitary and convex transducers based on their crystal arrangement, shape, frequency, and medical applications:
Piezoelectric Crystal Arrangement
Endocavitary transducers have a linear or slightly curved crystal arrangement to deliver focused beams for high-resolution imaging. On the other hand, convex transducers are designed with a curved crystal array that emits beams in a fan shape, providing broader coverage for external scans of larger and deeper structures within the body.
Shape and Design
Endocavitary transducers are designed with narrow and elongated shapes and small footprints. In contrast, convex transducers, also known as curved array transducers, feature a wider and curved shape with larger footprints.
Frequency
Endocavitary transducers operate at higher frequencies (between 5-9 MHz), allowing for greater resolution compared to convex probes, which work at lower frequencies (2-5 MHz) and provide deeper penetration.
Medical Applications
Endocavitary transducers are used for internal examination and placed into the internal parts, while convex transducers are placed on external body structures.
Top Endocavitary Transducers Brands for Medical Imaging
Here are some of the most well-known and top brands of convex transducers used in medical imaging:
- GE: Some popular endocavitary probes of the GE brand are GE E8C-RS and GE IC5-9-D.
- Philips: Some popular endocavitary probes of the Philips brand are Philips C9-4ec and Philips C10-3v.
- Siemens: Some popular endocavitary probes of the Siemens brand are Siemens EC9-4 and Siemens EV9-4.
- Samsung: Some popular endocavitary probes of the Samsung brand are Samsung EVN4-9 and Samsung V5-9.
- Canon: Some popular endocavitary probes of the Canon brand are Canon PVT-661VT and Canon PVT-781VTE.
- BK Medical: Some popular endocavitary probes of the Hitachi brand are BK 8818 and BK 8863.
The Bottom Line
That’s all about endocavitary transducers, which are specialized probes designed for internal imaging through body cavities like the vagina or rectum. These transducers are used in medical applications such as gynecological exams, prostate evaluations, and fertility assessments, providing high-resolution, real-time visuals of internal organs. With ergonomic designs, sterilizable features, and internal imaging capabilities, endocavitary transducers ensure precise diagnostics in sensitive areas.
