Portable Ultrasound With No Dedicated Sonographer
Quite a few primary care clinics buy portable ultrasound and then leave it gathering dust in a cupboard.
The problem is usually not the equipment. It is three things: nobody is confident reading the image, nobody dares commit to a conclusion, and nobody wants to carry the responsibility.
This article deals with those three.
1. Decide first what the device is for: a screening tool, not a diagnostic department
Once this is settled, everything else becomes easier.
| What portable equipment is good for | What it is not for |
|---|---|
| Initial screening | Issuing a formal ultrasound diagnostic report |
| Visual guidance (puncture, catheter placement) | Replacing detailed examination at a higher-level hospital |
| Rapid bedside assessment | Definitive diagnosis of complex or difficult cases |
| Home visits, follow-up, examination on site | - |
With the position clear, there is no disappointment of the kind that comes from buying a device and expecting it to stand in for an ultrasound department, and frontline staff are not left in the position of seeing something abnormal, not daring to say it, and fearing what happens if they stay silent.
2. Which examinations a primary care clinic can take on
Given the day-to-day needs of a primary care setting, the following are the more common examinations:
Abdominal organs
- Screening for fatty liver and liver cirrhosis
- Screening for kidney stones and gallstones
Superficial structures and vessels
- Thyroid
- Breast
- Carotid artery
Pelvis
- Uterus and adnexa
- Prostate
Other
- Superficial masses
- Antenatal checks (subject to the relevant qualifications and training)
Which examinations can actually be offered depends on the institution's qualifications, the competence of its staff and local regulations.
3. The one line that must be held: when to refer
This matters more than what can be examined, and it is what protects both the institution and the staff.
| Situation | What to do |
|---|---|
| Something abnormal is found and a definitive diagnosis is needed | Refer to a higher-level institution for further examination |
| A formal diagnostic report is required | Refer to an ultrasound department or a qualified institution |
| The image is atypical and cannot be judged | Do not force a conclusion; refer |
It is worth writing the referral criteria into the institution's own written procedure and giving every member of staff a copy. There are two benefits:
- Frontline staff have something to follow, instead of having to agonise over each case on the spot
- Screening that finds a problem leads straight to a referral, which is right for the patient and keeps the institution from working outside its scope
From a service point of view, patients identified at screening as needing further examination still end up at a higher-level institution or an ultrasound department for detailed examination. Portable equipment is for finding, not for replacing.
4. Three training routes that actually work
1. Start with the easiest sites
Begin with superficial and routine abdominal examinations, where a clear image is easier to obtain, and build confidence there first.
Do not start with difficult sites; if the image cannot be understood, people give up quickly.
2. Build your own list of standard views
For each site, fix which views are taken, write it down as a procedure, and follow it in order.
Working to a procedure has two practical benefits:
- Less dependence on one person's experience - someone else can do it
- Easier handover and review, and easier to train new staff
3. Use remote support
Images can be stored, exported and sent. When a case cannot be judged, sending the image to a clinician at a higher-level hospital for a reading is a realistic way for a primary care clinic to raise its diagnostic capability.
This is also where portable equipment has an advantage over auscultation and palpation alone: it leaves a record, and that record can be sent on.
5. A three-month onboarding plan (for reference)
| Stage | Focus | Goal |
|---|---|---|
| Month 1 | Getting to know the device: powering on, connecting, image adjustment (gain / depth / focus) | Can get a clear image |
| Month 2 | Repeated practice on a single site: pick the most frequently used site and become proficient at it | One examination done reliably |
| Month 3 | Add further sites and write the referral criteria | An internal procedure in place |
The pace can be slower, but do not skip steps. If month one does not produce a clear image, everything practised afterwards stays blurred.
6. Staffing and training
- Name specific people. One or two fixed staff is better than rotating everybody - rotation means nobody becomes proficient
- Ask about training support. It is reasonable to ask the equipment supplier what training and after-sales support they provide
- Take up further training. Watch for short courses and attachments organised by higher-level institutions
- Review internally. Looking at typical images together at regular intervals is the most effective way to learn
7. Common concerns
Q: Will offering ultrasound take work away from the ultrasound department at the higher-level hospital?
A: No. Patients found at screening to need further examination are still referred to the ultrasound department or the higher-level institution. Portable equipment is for finding; detailed diagnosis is still done by the ultrasound department. In practice, screening tends to bring out patients who would not otherwise have come in at all.
Q: What if the image is not good enough?
A: First check the settings - harmonic imaging, focus position, gain and dynamic range. If it is still unsatisfactory after adjustment, consider whether the probe type suits the site being examined.
Q: Can it be used where there is no network?
A: Yes. The device uses the Wi-Fi signal generated by the probe itself, so no Wi-Fi at the venue is required.
Q: How long does the battery last?
A: Scanning continuously at a normal working pace, about 3 hours. It can be charged through a USB cable or with a wireless charging pad or power bank; a full charge takes about 2-3 hours.
8. Selection guidance
Primary care clinics see a wide mix of conditions with few staff, so one device covering several examinations is the priority:
| Configuration | Composition | Suits |
|---|---|---|
| Dual-head | Convex + linear | Abdomen + superficial; the most common primary care configuration |
| Three-in-one | Convex + linear + cardiac | Where cardiac examination is also needed |
| Microconvex + linear | 5MN / 5ML | Also suits children and thin patients |
Models to look at: 5CP (dual-head), 5CL (three-in-one), 5MN / 5ML (microconvex + linear).
The above is the general version. The Primary Care Ultrasound Examination Checklist and the full Ultrasound Probe Selection Table set out probe configurations and parameters for each model; ask our product team for a copy.
Summary
- Decide the position first: portable equipment is a screening and visual-guidance tool, not a diagnostic department
- The common examinations in primary care: abdomen, thyroid, breast, carotid, uterus and adnexa, prostate, superficial masses
- The referral criteria must go into the institution's written procedure - this is the most important point
- Onboarding: easy to difficult, become reliable at one site first, then expand
- Build a list of standard views so that the work depends less on one person's experience
- Make use of remote reading - the images can be stored and sent on
- Name specific people; do not rotate the device between everybody
